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Rabbit Recombinant Monoclonal PD-L1 antibody. Suitable for IHC-P, IP, ELISA, WB, mIHC, ICC/IF and reacts with Human, Transfected cell line - Human, Recombinant fragment - Human, Transfected cell lysate - Human samples. Cited in 19 publications.

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Images

Key facts

Isotype

IgG

Host species

Rabbit

Storage buffer

pH: 7.2 - 7.4
Preservative: 0.05% Sodium azide
Constituents: PBS

Form

Liquid

Clonality

Monoclonal

Immunogen

  • The exact immunogen used to generate this antibody is proprietary information.
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Reactivity data

Select an application
Product promiseTestedExpectedPredictedNot recommended
Flow CytIHC-PIPELISAWBmIHCICC/IF
Human
Not recommended
Tested
Tested
Expected
Tested
Tested
Expected
Recombinant fragment - Human
Not recommended
Not recommended
Not recommended
Tested
Not recommended
Not recommended
Not recommended
Transfected cell line - Human
Not recommended
Tested
Not recommended
Not recommended
Not recommended
Not recommended
Tested
Transfected cell lysate - Human
Not recommended
Not recommended
Not recommended
Not recommended
Tested
Not recommended
Not recommended

Not recommended
Not recommended

Species

Human, Transfected cell line - Human, Recombinant fragment - Human, Transfected cell lysate - Human

Dilution info

-

Notes

-

Tested
Tested

Species

Human

Dilution info

1/1000 - 1/2000

Notes

Perform heat-mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.

Species

Transfected cell line - Human

Dilution info

1/1000 - 1/2000

Notes

Perform heat-mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.

Not recommended
Not recommended

Species

Recombinant fragment - Human, Transfected cell lysate - Human

Dilution info

-

Notes

-

Tested
Tested

Species

Human

Dilution info

1/30

Notes

-

Not recommended
Not recommended

Species

Transfected cell line - Human, Recombinant fragment - Human, Transfected cell lysate - Human

Dilution info

-

Notes

-

Tested
Tested

Species

Recombinant fragment - Human

Dilution info

-

Notes

-

Expected
Expected

Species

Human

Dilution info

Use at an assay dependent concentration.

Notes

-

Not recommended
Not recommended

Species

Transfected cell line - Human, Transfected cell lysate - Human

Dilution info

-

Notes

-

Tested
Tested

Species

Transfected cell lysate - Human

Dilution info

1/1000

Notes

ab228415 works better than this product in western blot testing.

Species

Human

Dilution info

1/1000

Notes

ab228415 works better than this product in western blot testing.

Not recommended
Not recommended

Species

Transfected cell line - Human, Recombinant fragment - Human

Dilution info

-

Notes

-

Tested
Tested

Species

Human

Dilution info

-

Notes

-

Not recommended
Not recommended

Species

Transfected cell line - Human, Recombinant fragment - Human, Transfected cell lysate - Human

Dilution info

-

Notes

-

Tested
Tested

Species

Transfected cell line - Human

Dilution info

1/1000

Notes

-

Expected
Expected

Species

Human

Dilution info

Use at an assay dependent concentration.

Notes

-

Not recommended
Not recommended

Species

Recombinant fragment - Human, Transfected cell lysate - Human

Dilution info

-

Notes

-

Target data

Function

Plays a critical role in induction and maintenance of immune tolerance to self (PubMed:11015443, PubMed:28813417, PubMed:28813410). As a ligand for the inhibitory receptor PDCD1/PD-1, modulates the activation threshold of T-cells and limits T-cell effector response (PubMed:11015443, PubMed:28813417, PubMed:28813410). Through a yet unknown activating receptor, may costimulate T-cell subsets that predominantly produce interleukin-10 (IL10) (PubMed:10581077).The PDCD1-mediated inhibitory pathway is exploited by tumors to attenuate anti-tumor immunity and escape destruction by the immune system, thereby facilitating tumor survival (PubMed:28813417, PubMed:28813410). The interaction with PDCD1/PD-1 inhibits cytotoxic T lymphocytes (CTLs) effector function (By similarity). The blockage of the PDCD1-mediated pathway results in the reversal of the exhausted T-cell phenotype and the normalization of the anti-tumor response, providing a rationale for cancer immunotherapy (By similarity).

Alternative names

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Rabbit Recombinant Monoclonal PD-L1 antibody. Suitable for IHC-P, IP, ELISA, WB, mIHC, ICC/IF and reacts with Human, Transfected cell line - Human, Recombinant fragment - Human, Transfected cell lysate - Human samples. Cited in 19 publications.

Alternative names

Key facts

Isotype

IgG

Form

Liquid

Clonality

Monoclonal

Immunogen
  • The exact immunogen used to generate this antibody is proprietary information.
Clone number

CAL10

Purification technique

Affinity purification Protein A

Concentration
Loading...
Purification notes

Purity >99%

Storage

Shipped at conditions

Blue Ice

Appropriate short-term storage duration

1-2 weeks

Appropriate short-term storage conditions

+4°C

Appropriate long-term storage conditions

-20°C

Aliquoting information

Upon delivery aliquot

Storage information

Avoid freeze / thaw cycle

Supplementary info

Biological function summary

PD-L1 plays a central role in immune evasion mechanisms utilized by tumors. It is not part of a larger protein complex but directly interacts with PD-1 and CD80. When PD-L1 binds to PD-1 it sends inhibitory signals leading to decreased T cell activation and proliferation allowing cancer cells to avoid immune destruction. PD-L1 expression provides a mechanism for tumors to suppress immune surveillance facilitating tumor progression.

Activity summary

PD-L1 also known as Programmed Death-Ligand 1 or CD274 is a protein involved in immune modulation. Mechanically PD-L1 interacts with its receptors particularly PD-1 to regulate cellular immune responses. This transmembrane protein has a calculated molecular weight of approximately 33 kDa. PD-L1 is expressed on various cell types including tumor cells and immune cells such as dendritic cells macrophages and B cells. Its expression is often upregulated in response to inflammatory cytokines.

Pathways

PD-L1 is integral to the immune checkpoint pathway which is an important regulator of immune response. The interaction between PD-L1 and PD-1 provides a mechanism for immune tolerance which is part of the broader adaptive immune system pathway. PD-L1 is related to other immune checkpoint proteins such as CTLA-4 in its function to limit autoreactivity and promote immune homeostasis.

Associated diseases and disorders

PD-L1 is most associated with cancer particularly in tumors such as melanoma and non-small cell lung cancer. PD-L1 expression on tumor cells often correlates with poor prognosis. PD-L1 directly interacts with PD-1 in these cancers a target for immunotherapies such as checkpoint inhibitors which aim to block this interaction and restore immune activity against tumors. PD-L1 involvement extends to autoimmune disorders where altered expression can impact tolerance and lead to immune-related tissue damage.

Product promise

We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.

In the unlikely event of one of our products not working as expected, you are covered by our product promise.

Full details and terms and conditions can be found here:
Terms & Conditions.

22 product images

  • Western blot - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Western blot - Anti-PD-L1 antibody [CAL10] (ab237726)

    False colour image of Western blot: Anti-PD-L1 antibody [CAL10] - Mouse IgG1 staining at 1/1000 dilution, shown in green; Rabbit anti-alpha Tubulin antibody [EP1332Y] (ab52866) loading control staining at 1/20000 dilution, shown in red. In Western blot, ab279292 was shown to bind specifically to PD-L1. A band was observed at 48 kDa in treated wild-type A549 cell lysates with no signal observed at this size in Cd274 knockout cell line ab267054 (knockout cell lysate ab256831). To generate this image, wild-type and Cd274 knockout A549 cell lysates were analysed. First, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 3 % milk in TBS-0.1 % Tween® 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Goat anti-Mouse IgG H&L (IRDye® 800CW) preabsorbed (ab216772) and Goat anti-Rabbit IgG H&L (IRDye® 680RD) preabsorbed (ab216777) at 1/20000 dilution.

    Lanes 1 - 2: Western blot - Anti-PD-L1 antibody [CAL10] - Mouse IgG1 (Chimeric) (AB279292) at 1/1000 dilution

    Lanes 1 - 2: Western blot - Anti-PD-L1 antibody [CAL10] (AB237726) at 1/1000 dilution

    Lane 1: Wild-type A549 Treated IFN-gamma (100 ng/ml) for 48 hours cell lysate at 20 µg

    Lane 2: CD274 knockout A549 Treated IFN-gamma (100 ng/ml) for 48 hours cell lysate at 20 µg

    Performed under reducing conditions.

    Predicted band size: 33 kDa

    Observed band size: 48 kDa

  • Western blot - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Western blot - Anti-PD-L1 antibody [CAL10] (ab237726)

    Blocking/Dilution buffer: 5% NFDM/TBST.

    All lanes: Western blot - Anti-PD-L1 antibody [CAL10] (AB237726) at 1/1000 dilution

    Lane 1: CHO-S (Chinese hamster ovary epithelial cell) whole cell lysate at 20 µg

    Lane 2: CHO-PD-L1 (PD-L1 stably expressed Chinese hamster ovary epithelial cell) whole cell lysate at 20 µg

    Secondary

    All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (AB97051) at 1/100000 dilution

    Predicted band size: 33 kDa

    Exposure time: 3s

    This data was developed using the same antibody clone in a different buffer formulation containing PBS and sodium azide (ab237726).

    Blocking/Dilution buffer: 5% NFDM/TBST.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726)

    (

    IHC image of ab237726 staining PD-L1 in PD-L1 Dynamic Range Analyte Control formalin fixed paraffin embedded cell lines HistoCyte Laboratories

    ), performed on a Leica BOND RX (standard Protocol F, Polymer Refine kit). The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 30 mins at 98°C. The section was then incubated with ab237726, 1μg/ml working concentration, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system for 8 minutes at room temperature. DAB was used as the chromogen for 10 minutes at room temperature. The section was then counterstained with hematoxylin, blued, dehydrated, cleared and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.

  • Immunocytochemistry/ Immunofluorescence - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunocytochemistry/ Immunofluorescence - Anti-PD-L1 antibody [CAL10] (ab237726)

    Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized CHO-PD-L1 (PD-L1 stably expressed Chinese hamster ovary epithelial cell) and CHO-S (chinese hamster ovary epithelial cell) cells labeling PD-L1 with ab237726 at 1/100 dilution, followed by Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (ab150077) secondary antibody at 1/1000 dilution (green). Confocal image showing membranous and cytoplasmic staining in CHO-PD-L1 cells. The nuclear counter stain is DAPI (blue). Counterstained with ab195889 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor® 594) at a 1/200 dilution (red). The negative control is the secondary antibody only.

  • Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726)

    Fluorescence multiplex immunohistochemical analysis of normal human tonsil tissue (formalin-fixed paraffin-embedded section).

    Merged staining of anti-PD1 (ab237728; orange; Opal™520), anti-PDL1 (ab237726; green; Opal™540), anti-CD68 (ab192847; yellow; Opal™570), anti-CD3 epsilon (ab16669; red; Opal™620), anti-Ki67 (ab16667; light blue; Opal™650) and anti-PanCK (ab7753; grey; Opal™690).

    The immunostaining was performed on a Leica Biosystems BOND® RX instrument with an Opal™ 7-color automation IHC kit (NEL821001KT, Akoya Biosciences®).

    The section was incubated in six rounds of staining; in the order of ab237728 (1/500 dilution), ab237726 (1/500 dilution), ab192847 (1/300 dilution), ab16669 (1/300 dilution), ab16667 (1/200 dilution) and ab7753 (1/200 dilution); each using a separate fluorescent tyramide signal amplification system.

    Sodium citrate antigen retrieval (Leica ER1, pH6.0, 30 minutes) was used in between rounds of tyramide signal amplification to remove the antibody from the previous round, to avoid any cross-reactivity.

    DAPI (dark blue) was used as a nuclear counter stain.

    Microscopy and pseudocoloring of individual Opal™ dyes was performed using a Vectra Polaris.

  • Western blot - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Western blot - Anti-PD-L1 antibody [CAL10] (ab237726)

    Blocking/Dilution buffer: 5% NFDM/TBST.

    The molecular mass observed is consistent with what has been described in the literature (PMID: 26546452).

    All lanes: Western blot - Anti-PD-L1 antibody [CAL10] (AB237726) at 1/1000 dilution

    Lane 1: A549 (Human lung carcinoma epithelial cell) whole cell lysate at 20 µg

    Lane 2: A549 treated with 100ng/ml IFN gamma for 48h whole cell lysate at 20 µg

    Secondary

    All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (AB97051) at 1/100000 dilution

    Predicted band size: 33 kDa

    Exposure time: 26s

    This data was developed using the same antibody clone in a different buffer formulation containing PBS and sodium azide (ab237726).

    Blocking/Dilution buffer: 5% NFDM/TBST.

    The molecular mass observed is consistent with what has been described in the literature (PMID: 26546452).

  • Immunoprecipitation - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunoprecipitation - Anti-PD-L1 antibody [CAL10] (ab237726)

    PD-L1 was immunoprecipitated from 0.35 mg NCI-H1975 (human non-small cell lung cancer cell line) whole cell lysate with ab237726 at 1/30 dilution. Western blot was performed from the immunoprecipitate using ab237726 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366), was used at 1/5000 dilution.
    Lane 1: NCI-H1975 whole cell lysate 10 μg (Input).
    Lane 2: ab237726 IP in NCI-H1975 whole cell lysate.
    Lane 3: Rabbit monoclonal IgG (ab172730) instead of ab237726 in NCI-H1975 whole cell lysate.
    Blocking/Dilution buffer: 5% NFDM/TBST.
    Exposure time: 30 seconds.

    The molecular mass observed is consistent with what has been described in the literature (PMID: 26546452).

    All lanes: Immunoprecipitation - Anti-PD-L1 antibody [CAL10] (AB237726)

    Predicted band size: 33 kDa

  • Western blot - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Western blot - Anti-PD-L1 antibody [CAL10] (ab237726)

    Blocking/Dilution buffer: 5% NFDM/TBST.

    All lanes: Western blot - Anti-PD-L1 antibody [CAL10] (AB237726) at 1/1000 dilution

    All lanes: Human placenta lysate at 20 µg

    Secondary

    All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (AB97051) at 1/100000 dilution

    Predicted band size: 33 kDa

    Exposure time: 26s

    This data was developed using the same antibody clone in a different buffer formulation containing PBS and sodium azide (ab237726).

    Blocking/Dilution buffer: 5% NFDM/TBST.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726)

    Immunohistochemical analysis of paraffin-embedded human lung carcinoma tissue labeling PD-L1 with ab237726 at 1/1000 dilution, followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP). Mainly membranous staining on the human lung carcinoma. The section was incubated with ab237726 for 15 mins at room temperature. The immunostaining was performed on a Leica Biosystems BOND® RX instrument. Counterstained with hematoxylin. Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is a ready to use Goat Anti-Rabbit IgG H&L (HRP). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 30 mins.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726)

    Immunohistochemical analysis of paraffin-embedded human placenta tissue labeling PD-L1 with ab237726 at 1/1000 dilution, followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP). Membranous staining on the human placenta. The section was incubated with ab237726 for 15 mins at room temperature. The immunostaining was performed on a Leica Biosystems BOND® RX instrument. Counterstained with hematoxylin. Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is a ready to use Goat Anti-Rabbit IgG H&L (HRP). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 30 mins.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726)

    Formalin-fixed, paraffin-embedded NSCLC (Non-small-cell lung carcinoma) tissue stained for PD L1 using ab237726 at 0.3 μg/ml dilution in immunohistochemical analysis. Positive staining (Left panel) and negative staining (Right panel).

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726)

    Formalin-fixed, paraffin-embedded PD L1 transfected HEK-293 (Human epithelial cell line from embryonic kidney) cells stained for PD L1 using ab237726 at 0.3 μg/ml dilution (Left panel) in immunohistochemical analysis.

    Negative control (Right panel): PD L2 transfected HEK-293 cells.

  • ELISA - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    ELISA - Anti-PD-L1 antibody [CAL10] (ab237726)

    ELISA - Anti-PD-L1 antibody [CAL10] (ab237726).

  • Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail
    This image is courtesy of ImmunoAtlas.

    Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726)

    Fluorescence multiplex immunohistochemical analysis of Human breast cancer tissue (formalin-fixed paraffin-embedded section).

    Merged staining of Anti-PD-L1 (ab251611; cyan; Opal™ 520), Anti-Granzyme B (ab219803; yellow; Opal™ 540), Anti-PD1 (ab251613; magenta; Opal™ 570), Anti-pan Cytokeratin (ab264485; red; Opal™ 620), Anti-EpCAM (ab225894; red; Opal™ 620), Anti-CD8 alpha (ab251596; green; Opal™ 650) and Anti-FOXP3 (ab96048; orange; Opal™ 690). EpCAM and pan-cytokeratin share the same dye and color. Dyes are pseudo-colored for better contrast of the markers.

    The immunostaining was performed on a Leica Biosystems BOND® MAX instrument with an Opal™ 6-Plex Detection Kit (NEL821001KT, Akoya Biosciences®).

    The section was incubated in six rounds of staining; sequentially for ab251611 (1/750 dilution), ab219803 (1/250 dilution), ab251613 (1/750 dilution), ab264485 (0.5 μg/ml), ab225894 (1/1250 dilution), ab251596 (1/1500 dilution) and ab96048 (10 μg/ml); each using a separate fluorescent tyramide signal amplification system. EDTA based antigen retrieval (Leica Biosystems BOND® Epitope Retrieval Solution 2, pH 9.0, 20 minutes) was used in between rounds of tyramide signal amplification to remove the antibody from the previous round, to avoid any cross-reactivity. DAPI (dark blue) was used as a nuclear counter stain.
    Microscopy and pseudocoloring of individual Opal™ dyes was performed using a Vectra 3 Imaging System (Akoya Biosciences®).

    This data is courtesy of ImmunoAtlas and it can be found here.

  • Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail
    This image is courtesy of ImmunoAtlas.

    Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726)

    Fluorescence multiplex immunohistochemical analysis of Human breast cancer tissue (formalin-fixed paraffin-embedded section).

    Merged staining of Anti-PD-L1 (ab251611; cyan; Opal™ 520), Anti-Granzyme B (ab219803; yellow; Opal™ 540), Anti-PD1 (ab251613; magenta; Opal™ 570), Anti-pan Cytokeratin (ab264485; red; Opal™ 620), Anti-EpCAM (ab225894; red; Opal™ 620), Anti-CD8 alpha (ab251596; green; Opal™ 650) and Anti-FOXP3 (ab96048; orange; Opal™ 690). EpCAM and pan-cytokeratin share the same dye and color. Dyes are pseudo-colored for better contrast of the markers.

    The immunostaining was performed on a Leica Biosystems BOND® MAX instrument with an Opal™ 6-Plex Detection Kit (NEL821001KT, Akoya Biosciences®).

    The section was incubated in six rounds of staining; sequentially for ab251611 (1/750 dilution), ab219803 (1/250 dilution), ab251613 (1/750 dilution), ab264485 (0.5 μg/ml), ab225894 (1/1250 dilution), ab251596 (1/1500 dilution) and ab96048 (10 μg/ml); each using a separate fluorescent tyramide signal amplification system. EDTA based antigen retrieval (Leica Biosystems BOND® Epitope Retrieval Solution 2, pH 9.0, 20 minutes) was used in between rounds of tyramide signal amplification to remove the antibody from the previous round, to avoid any cross-reactivity. DAPI (dark blue) was used as a nuclear counter stain.
    Microscopy and pseudocoloring of individual Opal™ dyes was performed using a Vectra 3 Imaging System (Akoya Biosciences®).

    This data is courtesy of ImmunoAtlas and it can be found here.

  • Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail
    This image is courtesy of ImmunoAtlas.

    Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726)

    Fluorescence multiplex immunohistochemical analysis of Human breast cancer tissue (formalin-fixed paraffin-embedded section).

    Merged staining of Anti-PD-L1 (ab251611; cyan; Opal™ 520), Anti-Granzyme B (ab219803; yellow; Opal™ 540), Anti-PD1 (ab251613; magenta; Opal™ 570), Anti-pan Cytokeratin (ab264485; red; Opal™ 620), Anti-EpCAM (ab225894; red; Opal™ 620), Anti-CD8 alpha (ab251596; green; Opal™ 650) and Anti-FOXP3 (ab96048; orange; Opal™ 690). EpCAM and pan-cytokeratin share the same dye and color. Dyes are pseudo-colored for better contrast of the markers.

    The immunostaining was performed on a Leica Biosystems BOND® MAX instrument with an Opal™ 6-Plex Detection Kit (NEL821001KT, Akoya Biosciences®).

    The section was incubated in six rounds of staining; sequentially for ab251611 (1/750 dilution), ab219803 (1/250 dilution), ab251613 (1/750 dilution), ab264485 (0.5 μg/ml), ab225894 (1/1250 dilution), ab251596 (1/1500 dilution) and ab96048 (10 μg/ml); each using a separate fluorescent tyramide signal amplification system. EDTA based antigen retrieval (Leica Biosystems BOND® Epitope Retrieval Solution 2, pH 9.0, 20 minutes) was used in between rounds of tyramide signal amplification to remove the antibody from the previous round, to avoid any cross-reactivity. DAPI (dark blue) was used as a nuclear counter stain.
    Microscopy and pseudocoloring of individual Opal™ dyes was performed using a Vectra 3 Imaging System (Akoya Biosciences®).

    This data is courtesy of ImmunoAtlas and it can be found here.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726)

    Immunohistochemical analysis of formalin-fixed paraffin-embedded human placenta labelling PD-L1 with ab237726 at a dilution of 2µg/ml. The immunostaining was performed on a Ventana DISCOVERY ULTRA (Roche Tissue Diagnostics) instrument with an OptiView DAB IHC Detection Kit. Heat mediated antigen retrieval was conducted for 32min with ULTRA cell conditioning solution (CC1 pH8.5). ab237726 anti PD-L1 antibody was incubated at 37°C for 16min. Sections were counterstained is with Hematoxylin II. Image inset shows absence of staining in secondary antibody only control.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726)

    Immunohistochemical analysis of formalin-fixed paraffin-embedded human tonsil labelling PD-L1 with ab237726 at a dilution of 1µg/ml. The immunostaining was performed on a Ventana DISCOVERY ULTRA (Roche Tissue Diagnostics) instrument with an OptiView DAB IHC Detection Kit. Heat mediated antigen retrieval was conducted for 32min with ULTRA cell conditioning solution (CC1 pH8.5). ab237726 anti PD-L1 antibody was incubated at 37°C for 16min. Sections were counterstained is with Hematoxylin II. Image inset shows absence of staining in secondary antibody only control.

  • Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail
    This image is courtesy of ImmunoAtlas.

    Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726)

    Fluorescence multiplex immunohistochemical analysis of Human breast cancer tissue (formalin-fixed paraffin-embedded section).

    Merged staining of Anti-PD-L1 (ab251611; cyan; Opal™ 520), Anti-Granzyme B (ab219803; yellow; Opal™ 540), Anti-PD1 (ab251613; magenta; Opal™ 570), Anti-pan Cytokeratin (ab264485; red; Opal™ 620), Anti-EpCAM (ab225894; red; Opal™ 620), Anti-CD8 alpha (ab251596; green; Opal™ 650) and Anti-FOXP3 (ab96048; orange; Opal™ 690). EpCAM and pan-cytokeratin share the same dye and color. Dyes are pseudo-colored for better contrast of the markers.

    The immunostaining was performed on a Leica Biosystems BOND® MAX instrument with an Opal™ 6-Plex Detection Kit (NEL821001KT, Akoya Biosciences®).

    The section was incubated in six rounds of staining; sequentially for ab251611 (1/750 dilution), ab219803 (1/250 dilution), ab251613 (1/750 dilution), ab264485 (0.5 μg/ml), ab225894 (1/1250 dilution), ab251596 (1/1500 dilution) and ab96048 (10 μg/ml); each using a separate fluorescent tyramide signal amplification system. EDTA based antigen retrieval (Leica Biosystems BOND® Epitope Retrieval Solution 2, pH 9.0, 20 minutes) was used in between rounds of tyramide signal amplification to remove the antibody from the previous round, to avoid any cross-reactivity. DAPI (dark blue) was used as a nuclear counter stain.
    Microscopy and pseudocoloring of individual Opal™ dyes was performed using a Vectra 3 Imaging System (Akoya Biosciences®).

    This data is courtesy of ImmunoAtlas and it can be found here.

  • Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail
    This image is courtesy of ImmunoAtlas.

    Multiplex immunohistochemistry - Anti-PD-L1 antibody [CAL10] (ab237726)

    Fluorescence multiplex immunohistochemical analysis of Human breast cancer tissue (formalin-fixed paraffin-embedded section).

    Merged staining of Anti-PD-L1 (ab251611; cyan; Opal™ 520), Anti-Granzyme B (ab219803; yellow; Opal™ 540), Anti-PD1 (ab251613; magenta; Opal™ 570), Anti-pan Cytokeratin (ab264485; red; Opal™ 620), Anti-EpCAM (ab225894; red; Opal™ 620), Anti-CD8 alpha (ab251596; green; Opal™ 650) and Anti-FOXP3 (ab96048; orange; Opal™ 690). EpCAM and pan-cytokeratin share the same dye and color. Dyes are pseudo-colored for better contrast of the markers.

    The immunostaining was performed on a Leica Biosystems BOND® MAX instrument with an Opal™ 6-Plex Detection Kit (NEL821001KT, Akoya Biosciences®).

    The section was incubated in six rounds of staining; sequentially for ab251611 (1/750 dilution), ab219803 (1/250 dilution), ab251613 (1/750 dilution), ab264485 (0.5 μg/ml), ab225894 (1/1250 dilution), ab251596 (1/1500 dilution) and ab96048 (10 μg/ml); each using a separate fluorescent tyramide signal amplification system. EDTA based antigen retrieval (Leica Biosystems BOND® Epitope Retrieval Solution 2, pH 9.0, 20 minutes) was used in between rounds of tyramide signal amplification to remove the antibody from the previous round, to avoid any cross-reactivity. DAPI (dark blue) was used as a nuclear counter stain.
    Microscopy and pseudocoloring of individual Opal™ dyes was performed using a Vectra 3 Imaging System (Akoya Biosciences®).

    This data is courtesy of ImmunoAtlas and it can be found here.

  • Western blot - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Western blot - Anti-PD-L1 antibody [CAL10] (ab237726)

    ab228415 works better than ab237726 in western blot testing.
    We suggest optimizing experimental protocols (increasing lysate amount, using lower dilution or higher sensitivity ECL substrate) to improve results.

    Blocking/Diluting buffer and concentration: 5% NFDM/TBST

    Lanes 1 - 4: Western blot - Anti-PD-L1 antibody [CAL10] (AB237726) at 1/1000 dilution

    Lanes 1 - 4: Western blot - Anti-PD-L1 antibody [CAL10] - BSA and Azide free (AB251611)

    Lane 1: PC-3 (human prostate adenocarcinoma epithelial cell) whole cell lysate at 20 µg

    Lane 2: A375 (human malignant melanoma epithelial cell) whole cell lysate at 20 µg

    Lane 3: HeLa (human cervix adenocarcinoma epithelial cell) whole cell lysate at 20 µg

    Lane 4: A549 (human lung carcinoma epithelial cell) whole cell lysate at 20 µg

    Secondary

    All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (AB97051) at 1/20000 dilution

    Observed band size: 40-60 kDa

    Exposure time: 100s

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-PD-L1 antibody [CAL10] (ab237726)

    Tissue Microarrays stained for "Anti-PD-L1 antibody [CAL10]" using "ab237726"in immunohistochemical analysis. This table provides a detailed overview of positive (tick mark) and negative (cross mark) staining per sample type tested. The sections were pre-treated using Heat mediated antigen retrieval using Bond™ Epitope Retrieval Solution 2 (pH 9.0) for 30 minutes. The sections were incubated with ab237726 for 15 mins at room temperature followed by a ready to use LeicaDS9800 (Bond™ Polymer Refine Detection). The immunostaining was performed on a Leica Biosystems BOND® RX instrument.

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